Comparison of catalytic performance of different types of graphene in Li-O2 batteries

Jung Eun Park; Gwang Hee Lee; Mingu Choi; Mushtaq Ahmad Dar; Hyun Woo Shim; Dong Wan Kim

doi:10.1016/j.jallcom.2015.05.200

Comparison of catalytic performance of different types of graphene in Li-O₂ batteries

Jung Eun Park, Gwang Hee Lee, Mingu Choi, Mushtaq Ahmad Dar, Hyun Woo Shim, Dong Wan Kim

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

We report comparative catalytic studies of two types of commercial graphene nanoplatelets as electrode materials with different physical properties for Li-O₂ batteries. The graphene nanoplatelets were characterized by field-emission scanning electron microscopy, transmission electron microscopy, N₂ physisorption, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical performance of the graphene nanoplatelets, which have large pore volume density, large pore diameter, and high population of defect sites, was evaluated using galvanostatic discharge-charge cycling and a depth-of-discharge test. Higher specific capacity of the Li-O₂ battery was achieved when graphene nanoplatelets were used as an electrode material; this specific capacity could be associated with pore volume density, pore diameter, and number of defects in the graphene nanoplatelets.

Original language	English
Pages (from-to)	231-237
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	647
DOIs	https://doi.org/10.1016/j.jallcom.2015.05.200
Publication status	Published - 2015 Jul 1

Bibliographical note

Funding Information:
This research was performed as a cooperation project supported by the Korea Research Institute of Chemical Technology . This research was also supported by the Korea Small and Medium Business Administration ( S2230272 ) and by the R&D Center for Valuable Recycling (Global-Top R&BD Program) of the Ministry of Environment ( 2014001170002 ).

Keywords

Catalytic performance
Electrochemical performance
Graphene
Li-O batteries
Pore volume

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2015.05.200

Cite this

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title = "Comparison of catalytic performance of different types of graphene in Li-O2 batteries",

abstract = "We report comparative catalytic studies of two types of commercial graphene nanoplatelets as electrode materials with different physical properties for Li-O2 batteries. The graphene nanoplatelets were characterized by field-emission scanning electron microscopy, transmission electron microscopy, N2 physisorption, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical performance of the graphene nanoplatelets, which have large pore volume density, large pore diameter, and high population of defect sites, was evaluated using galvanostatic discharge-charge cycling and a depth-of-discharge test. Higher specific capacity of the Li-O2 battery was achieved when graphene nanoplatelets were used as an electrode material; this specific capacity could be associated with pore volume density, pore diameter, and number of defects in the graphene nanoplatelets.",

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author = "Park, {Jung Eun} and Lee, {Gwang Hee} and Mingu Choi and Dar, {Mushtaq Ahmad} and Shim, {Hyun Woo} and Kim, {Dong Wan}",

note = "Funding Information: This research was performed as a cooperation project supported by the Korea Research Institute of Chemical Technology . This research was also supported by the Korea Small and Medium Business Administration ( S2230272 ) and by the R&D Center for Valuable Recycling (Global-Top R&BD Program) of the Ministry of Environment ( 2014001170002 ). ",

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AU - Park, Jung Eun

AU - Lee, Gwang Hee

AU - Choi, Mingu

AU - Dar, Mushtaq Ahmad

AU - Shim, Hyun Woo

AU - Kim, Dong Wan

N1 - Funding Information: This research was performed as a cooperation project supported by the Korea Research Institute of Chemical Technology . This research was also supported by the Korea Small and Medium Business Administration ( S2230272 ) and by the R&D Center for Valuable Recycling (Global-Top R&BD Program) of the Ministry of Environment ( 2014001170002 ).

PY - 2015/7/1

Y1 - 2015/7/1

N2 - We report comparative catalytic studies of two types of commercial graphene nanoplatelets as electrode materials with different physical properties for Li-O2 batteries. The graphene nanoplatelets were characterized by field-emission scanning electron microscopy, transmission electron microscopy, N2 physisorption, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical performance of the graphene nanoplatelets, which have large pore volume density, large pore diameter, and high population of defect sites, was evaluated using galvanostatic discharge-charge cycling and a depth-of-discharge test. Higher specific capacity of the Li-O2 battery was achieved when graphene nanoplatelets were used as an electrode material; this specific capacity could be associated with pore volume density, pore diameter, and number of defects in the graphene nanoplatelets.

AB - We report comparative catalytic studies of two types of commercial graphene nanoplatelets as electrode materials with different physical properties for Li-O2 batteries. The graphene nanoplatelets were characterized by field-emission scanning electron microscopy, transmission electron microscopy, N2 physisorption, X-ray photoelectron spectroscopy, and Raman spectroscopy. The electrochemical performance of the graphene nanoplatelets, which have large pore volume density, large pore diameter, and high population of defect sites, was evaluated using galvanostatic discharge-charge cycling and a depth-of-discharge test. Higher specific capacity of the Li-O2 battery was achieved when graphene nanoplatelets were used as an electrode material; this specific capacity could be associated with pore volume density, pore diameter, and number of defects in the graphene nanoplatelets.

KW - Catalytic performance

KW - Electrochemical performance

KW - Graphene

KW - Li-O batteries

KW - Pore volume

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